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26 July 2010

"The political genius of supply-side economics"

This post by the Financial Times' Martin Wolf is extremely insightful, plucking out the heart of the partisan economic debate over supply-sidism and what it means. It's hard not to just quote the whole thing, but the heart is here:

To understand modern Republican thinking on fiscal policy, we need to go back to perhaps the most politically brilliant (albeit economically unconvincing) idea in the history of fiscal policy: “supply-side economics”. Supply-side economics liberated conservatives from any need to insist on fiscal rectitude and balanced budgets. Supply-side economics said that one could cut taxes and balance budgets, because incentive effects would generate new activity and so higher revenue.

The political genius of this idea is evident. Supply-side economics transformed Republicans from a minority party into a majority party. It allowed them to promise lower taxes, lower deficits and, in effect, unchanged spending. Why should people not like this combination? Who does not like a free lunch?

How did supply-side economics bring these benefits? First, it allowed conservatives to ignore deficits. They could argue that, whatever the impact of the tax cuts in the short run, they would bring the budget back into balance, in the longer run. Second, the theory gave an economic justification – the argument from incentives - for lowering taxes on politically important supporters. Finally, if deficits did not, in fact, disappear, conservatives could fall back on the “starve the beast” theory: deficits would create a fiscal crisis that would force the government to cut spending and even destroy the hated welfare state.

...

The evidence shows, then, that contemporary conservatives (unlike those of old) simply do not think deficits matter, as former vice-president Richard Cheney is reported to have told former treasury secretary Paul O’Neill. But this is not because the supply-side theory of self-financing tax cuts, on which Reagan era tax cuts were justified, has worked, but despite the fact it has not. The faith has outlived its economic (though not its political) rationale.